mirror of
https://github.com/FFmpeg/FFmpeg.git
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192 lines
8.9 KiB
C
192 lines
8.9 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/opt.h"
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#include "libavcodec/codec.h"
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#include "libavcodec/codec_desc.h"
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#include "libavcodec/codec_internal.h"
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#include "libavcodec/internal.h"
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static const char *get_type_string(enum AVMediaType type)
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{
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const char *ret = av_get_media_type_string(type);
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return ret ? ret : "unknown";
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}
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#define AV_LOG(...) av_log(NULL, AV_LOG_FATAL, __VA_ARGS__)
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#define ERR_INTERNAL(msg, ...) \
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do { \
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AV_LOG(msg, codec->name __VA_ARGS__); \
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ret = 1; \
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} while (0)
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#define ERR(msg) ERR_INTERNAL(msg, )
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#define ERR_EXT(msg, ...) ERR_INTERNAL(msg, , __VA_ARGS__)
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static int priv_data_size_wrong(const FFCodec *codec)
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{
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if (codec->priv_data_size < 0 ||
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codec->p.priv_class && codec->priv_data_size < sizeof(AVClass*))
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return 1;
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if (!codec->p.priv_class || !codec->p.priv_class->option)
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return 0;
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for (const AVOption *opt = codec->p.priv_class->option; opt->name; opt++) {
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if (opt->offset >= codec->priv_data_size ||
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opt->type == AV_OPT_TYPE_CONST && opt->offset != 0 ||
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opt->type != AV_OPT_TYPE_CONST && (opt->offset < sizeof(AVClass*) || opt->offset < 0)) {
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AV_LOG("Option %s offset %d nonsensical\n",
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opt->name, opt->offset);
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return 1;
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}
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}
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return 0;
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}
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int main(void){
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void *iter = NULL;
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const AVCodec *codec = NULL;
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int ret = 0;
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while (codec = av_codec_iterate(&iter)) {
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const FFCodec *const codec2 = ffcodec(codec);
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const AVCodecDescriptor *desc;
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int is_decoder = 0, is_encoder = 0;
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if (!codec->name) {
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AV_LOG("Codec for format %s has no name\n",
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avcodec_get_name(codec->id));
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ret = 1;
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continue;
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}
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if (codec->type != AVMEDIA_TYPE_VIDEO &&
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codec->type != AVMEDIA_TYPE_AUDIO &&
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codec->type != AVMEDIA_TYPE_SUBTITLE)
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ERR_EXT("Codec %s has unsupported type %s\n",
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get_type_string(codec->type));
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if (codec->type != AVMEDIA_TYPE_AUDIO) {
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if (codec->ch_layouts || codec->sample_fmts ||
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codec->supported_samplerates)
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ERR("Non-audio codec %s has audio-only fields set\n");
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if (codec->capabilities & (AV_CODEC_CAP_SMALL_LAST_FRAME |
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AV_CODEC_CAP_CHANNEL_CONF |
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AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
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ERR("Non-audio codec %s has audio-only capabilities set\n");
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}
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if (codec->type != AVMEDIA_TYPE_VIDEO) {
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if (codec->pix_fmts || codec->supported_framerates)
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ERR("Non-video codec %s has video-only fields set\n");
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if (codec2->caps_internal & FF_CODEC_CAP_EXPORTS_CROPPING)
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ERR("Non-video codec %s exports cropping\n");
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}
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if (codec2->caps_internal & FF_CODEC_CAP_SLICE_THREAD_HAS_MF &&
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!(codec->capabilities & AV_CODEC_CAP_SLICE_THREADS))
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ERR("Codec %s wants mainfunction despite not being "
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"slice-threading capable");
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if (codec2->caps_internal & FF_CODEC_CAP_AUTO_THREADS &&
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!(codec->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
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AV_CODEC_CAP_SLICE_THREADS |
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AV_CODEC_CAP_OTHER_THREADS)))
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ERR("Codec %s has private-only threading support\n");
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switch (codec2->cb_type) {
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case FF_CODEC_CB_TYPE_DECODE:
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case FF_CODEC_CB_TYPE_DECODE_SUB:
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case FF_CODEC_CB_TYPE_RECEIVE_FRAME:
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is_decoder = 1;
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break;
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case FF_CODEC_CB_TYPE_ENCODE:
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case FF_CODEC_CB_TYPE_ENCODE_SUB:
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case FF_CODEC_CB_TYPE_RECEIVE_PACKET:
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is_encoder = 1;
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break;
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default:
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ERR("Codec %s has unknown cb_type\n");
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continue;
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}
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if (is_decoder != av_codec_is_decoder(codec) ||
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is_encoder != av_codec_is_encoder(codec)) {
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ERR("Codec %s cb_type and av_codec_is_(de|en)coder inconsistent.\n");
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continue;
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}
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#define CHECK(TYPE, type) (codec2->cb_type == FF_CODEC_CB_TYPE_ ## TYPE && !codec2->cb.type)
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if (CHECK(DECODE, decode) || CHECK(DECODE_SUB, decode_sub) ||
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CHECK(RECEIVE_PACKET, receive_packet) ||
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CHECK(ENCODE, encode) || CHECK(ENCODE_SUB, encode_sub) ||
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CHECK(RECEIVE_FRAME, receive_frame)) {
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ERR_EXT("Codec %s does not implement its %s callback.\n",
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is_decoder ? "decoding" : "encoding");
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}
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#undef CHECK
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if (is_encoder) {
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if ((codec->type == AVMEDIA_TYPE_SUBTITLE) != (codec2->cb_type == FF_CODEC_CB_TYPE_ENCODE_SUB))
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ERR("Encoder %s is both subtitle encoder and not subtitle encoder.");
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if (codec2->update_thread_context || codec2->update_thread_context_for_user || codec2->bsfs)
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ERR("Encoder %s has decoder-only thread functions or bsf.\n");
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if (codec->type == AVMEDIA_TYPE_AUDIO) {
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if (!codec->sample_fmts) {
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av_log(NULL, AV_LOG_FATAL, "Encoder %s is missing the sample_fmts field\n", codec->name);
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ret = 1;
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}
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}
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if (codec2->caps_internal & (FF_CODEC_CAP_ALLOCATE_PROGRESS |
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FF_CODEC_CAP_SETS_PKT_DTS |
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FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM |
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FF_CODEC_CAP_EXPORTS_CROPPING |
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FF_CODEC_CAP_SETS_FRAME_PROPS) ||
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codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING |
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AV_CODEC_CAP_CHANNEL_CONF |
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AV_CODEC_CAP_DRAW_HORIZ_BAND))
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ERR("Encoder %s has decoder-only capabilities set\n");
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if (codec->capabilities & AV_CODEC_CAP_FRAME_THREADS &&
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codec->capabilities & AV_CODEC_CAP_ENCODER_FLUSH)
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ERR("Frame-threaded encoder %s claims to support flushing\n");
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if (codec->capabilities & AV_CODEC_CAP_FRAME_THREADS &&
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codec->capabilities & AV_CODEC_CAP_DELAY)
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ERR("Frame-threaded encoder %s claims to have delay\n");
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if (codec2->caps_internal & FF_CODEC_CAP_EOF_FLUSH &&
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!(codec->capabilities & AV_CODEC_CAP_DELAY))
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ERR("EOF_FLUSH encoder %s is not marked as having delay\n");
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} else {
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if ((codec->type == AVMEDIA_TYPE_SUBTITLE) != (codec2->cb_type == FF_CODEC_CB_TYPE_DECODE_SUB))
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ERR("Subtitle decoder %s does not implement decode_sub callback\n");
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if (codec->type == AVMEDIA_TYPE_SUBTITLE && codec2->bsfs)
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ERR("Automatic bitstream filtering unsupported for subtitles; "
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"yet decoder %s has it set\n");
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if (codec->capabilities & (AV_CODEC_CAP_SMALL_LAST_FRAME |
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AV_CODEC_CAP_VARIABLE_FRAME_SIZE |
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AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE |
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AV_CODEC_CAP_ENCODER_FLUSH))
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ERR("Decoder %s has encoder-only capabilities\n");
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if (codec2->caps_internal & FF_CODEC_CAP_ALLOCATE_PROGRESS &&
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!(codec->capabilities & AV_CODEC_CAP_FRAME_THREADS))
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ERR("Decoder %s wants allocated progress without supporting"
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"frame threads\n");
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}
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if (priv_data_size_wrong(codec2))
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ERR_EXT("Private context of codec %s is impossibly-sized (size %d).",
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codec2->priv_data_size);
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if (!(desc = avcodec_descriptor_get(codec->id))) {
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ERR("Codec %s lacks a corresponding descriptor\n");
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} else if (desc->type != codec->type)
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ERR_EXT("The type of AVCodec %s and its AVCodecDescriptor differ: "
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"%s vs %s\n",
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get_type_string(codec->type), get_type_string(desc->type));
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}
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return ret;
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}
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